As well as singing their biggest hits like ‘Stone Cold’, ‘Heart Attack’ and ‘Chains’, Demi dropped Nick in it about his womanising ways when he was younger, when he kept switching between dating Selena Gomez and Miley Cyrus!

Nick reveals when he finally ditched his famous purity ring… and reveals that he got tied up in chains during a performance once – saucy!

Demi and Nick also stopped off to do a spot of busking together – and pretty much brought Hollywood to a standstill with their improvised drum kit!